Mazda M6 RX8 Key Replacement Guide

Last updated: September 2026 · Verified against OEM part numbers

Compatible keys for Mazda M6 RX8

Before you order

• Match the year range — Mazda changed key systems across model years. Check your registration year.
• Check your current key — the OEM number printed on your key matches the table above.
• Programming — smart keys need a compatible programmer (Xhorse, VVDI, Autel). We can advise which one works for each key.

Frequently asked questions

What frequency is the Mazda M6 RX8 key?

The Mazda M6 RX8 key operates on 313.8 MHz. Frequency is fixed in the key hardware and cannot be reprogrammed — a key bought on the wrong frequency will not lock, unlock or start the car.

What chip does the Mazda M6 RX8 key use?

The Mazda M6 RX8 uses a 4D63 chip. Tell your supplier the chip type when ordering so you receive the correct blank — an ID46 blank will not replace an ID47 or 4D83 key.

Which key fits my Mazda M6 RX8?

The Mazda M6 RX8 (various model years) uses the KPU41788 313.8MHz 4D63 Chip 3+1 Button Flip Remote Key for Mazda M6 RX8. Check the table above for all compatible options, verified against OEM part numbers.

Do you supply Mazda M6 RX8 keys wholesale?

Yes. We supply locksmiths and key distributors at wholesale prices with MOQ from 5 units. Message us on WhatsApp for today's price list.

Related: All Mazda keys · All guides · Key Finder

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